@@user-dk1yb8cc8j I think he just noticed the plane, not the camera. Strangely it was the girls who noticed the plane the most. Usually it's guys who pay more attention to stuff like that.
This was a big departure from your normal builds, quick and dirty prototypes with several modifications until something approximating the concept is created... you went straight into the final form this time. Man the 03 air unit is impressive as heck.
He has an interesting process. I know hindsight is 20/20, but I'm surprised he didn't anticipate the takeoff issues with the pontoon design given his prior experience.
Cutting the Kevlar fabric on the bias (45*) makes the hinges WAY stronger. It results in twice the fibers crossing the hinge line. Yes I did figure this out the hard way haha Love these videos!
Im building an airboat out of pink foamboard insulation.. Started 3 months ago, got a "working" prototype but 3 months later i now have a 3d printer, a new larger cnc, been staying up way too late learning onshape and so far down the rabbit hole its ridiculous! Loving\hating every minute of it!! Got a few essential tips and ideas from this video.. Thanks! Its been 11 years since i got my first cnc router, if anyone doesnt understand why so many makers videos have therapists services as sponsors, dont laugh -well you can if you want, but designing something from scratch is a mind f**k in a class of its own.. Especially when you're learning on the fly with no formal education in machining and mechanical engineering.. Dont get me wrong, even the pain we go through is enjoyable and the personal reward factor is off the charts, but the pain is real folks 😊 Thanks again for the content --and pain involved in making it !!!!
I'm picturing some little delta-wing style thing that can just dart into the water like a needle. Really high speed in a straight line but with enough momentum to jump back out.
I'm pretty sure that your issue with water operations is two fold- high tail mounted engines providing a nose down moment under power combined with nacelle steps that are too forward to provide sufficient pivots for rotation. The first could be solved by mounting the motors to the front of the necelles, which will also provide par thrust and blow the whole wing for enhanced low speed lift. The second could be remedied by fiberglassing 3d printed spacers behind the existing steps to move them back to slightly behind the cg. Good luck and thanks for sharing, she's a very pretty bird.
Awesome but.... O-riiiiiings! For the love of whatever you hold dear, please... You are one of the smartest dudes on the internet and o-ring channel design is super easy, especially when you mill the channel out with Ze Robot. No more "trying" to keep compartments watertight;) Anyways, back to the video, maybe you did manage to make it watertight after all, hehe.
@@AB-bu8ti I am not an engineer, maybe just slightly techy/nerdy and I figured it out pretty much just by using the Eriks online o-ring calculator. But I guess I may also have read some articles way back when or maybe some intro text in Parkers O-ring book (online). It's fairly simple. O-rings work by being compressed. Dynamic use cases generally have a bit less compression and static ones a tad more, something like 15-30% but the calculators will tell you and there are published guidelines, too. But you don't want to over do it. Also, importantly, the o-ring still needs to have free space to expand into. If you constrain or compress it on all four sides, it will take a permanent deformation and/or wear out fast. Again, the online calculator will throw a warning if you don't have enough free space. Or if you stretch the ring too much. Also, say you have a rod in a bore that needs to be sealed, you wanna keep the gap between the rod and the bore small enough that the o-ring can't get pushed into the gap. Calculator will warn you of that, too;). But that's most likely an issue at higher pressures. You could actually just do the calcs by hand, too and then add free space, not stretch the o-ring too much and keep the gap small:) But I suggest making a few example designs in the calculator and soon, you will get the hang of it:)
"What the heck is that thing?" - all of the random pedestrians at the end of the vid. GREAT STUFF! Sometimes success and failure can't be distinguished from each other.
I am very far from an aeronautical designer, but I'm wondering if your motors are too high/too far back? that could be putting too much forward rotation at low speeds which could be the reason it is plowing into the water. Your previous designs had the motors right up front and even pointing up a bit. Either way, your videos are excellent, thank you!
The footage with the drone and the slowmo at the end was amazing! Your building skills have advanced so much, man. Can’t wait what you come up with next :3
I have been watching you since you started your RUclips channel. It has been fun watching your engineering skills improve over the years. Your flying skills have always been extraordinary. Keep it going.
As someone who used to restore vehicles for a living I absolutely love glassing. It wasn't a very common repair I got to do as I typically used period correct repairs, but some owners wanted it to look right for lower cost, so filler and glass worked really well sometimes. My absolute favorite was old school body filling using lead.
Of all things, I enjoyed the coordination with the drone pilot the most. Reminded me of flying virtual aerobatics. Formation flight is always beautiful.
13:09 Good lord that’s so pretty, I have never seen mountains with my own eyes because Florida is literally flatter than a pancake, in fact it’s highest point, Britton hill is only 345 feet tall
"The 1930 Robertson Waterplane ground-effect vehicle powered by an outboard motor". There are pictures and videos, but I don't think I can post a pic in the comments. I saw this the other day and immediately thought this might be something you'd build or at least be interested in knowing existed, if you don't already. In other news... it's getting to be grass cutting season. I hope you are working on your next autonomous mower contraption. I'm a long time subscriber to the channel and grateful for your willingness to share your talents with the world. Keep up the great work! - Stanford
You and Nick Rehm inspired me to learn onshape and now I can make tons of stuff in there and have some really cool projects. It way expanded my follow through with my creativity.
Daniel, I love your channel and your projects. You are the opposite of lazy. As I watched you apply all that fiberglass I was thinking, I guess you plan on keeping this plane for years to come. On a technical note, over the years I worked on some boat projects while at Columbia University, and a naval engineer turned me on to a three-volume set of books called Principles of Naval Architecture. Columbia's library got them for us, and I was able to look at them. If you can get a hold of them, they are seriously a dense read, but there is an entire chapter dedicated to designing stepped floats for seaplanes. It turns out the design for coming up on plane is trickier than people think. The step has to be the right size and in the right place for it to work effectively. The entire shape of the float is also important. Sorry for the long response but keep up the great work!
Wow. Beyond my comprehension. And from my old stomping grounds too!. You are an amazing engineer, covering all scopes of the physical/digital theater. Love your videos. If you are ever inclined to visit Montana, give me a tickle.
So fun! Impressive build. Ground effect is a function of wing span. Longer wings equal more ground effect. Something like half of the span of the wings in distanced to the surface is when the ground effect becomes noticeable.
Amazing scenery! love those mountains in the background :) Very interesting video to, looking forward for you doing like the max range test again with one of your planes :)
Not bothersome at all! Come say hi again next time haha. BTW, you said you're a rowing coach, right? Might be fun to take the most efficient propeller from my prop competition and build it into a little electric outboard. Then mount that on one of those super efficient row boats you guys have. Would be interesting to measure the wh/km
ground effect is absolutely more proportional to size (specifically of the wing) and more weight simply means the cushion of air it builds has to "work harder" so to speak to provide enough pressure to make the ground effect as pronounced as an identical plane with less weight.
I would love to see a video series of you designing a plane like this in on shape (if you already have that I apologize). As someone who wants to get into making custom RC planes I think it would be really interesting to see your though process when it comes to a design.
Lovely video. Top-notch engineering. An interesting look at what R&D aeronautics engineering probably looked like nearly a century ago; but with only one guy doing all of it. A nice blend of science & art.
Great build! I've been using heat sinks sticking out of the fuse on my ESCs for electric float planes for 20 years now! Love what you did on the VTX, you might want to add that feature for the ESCs too! Consider joining us for the NW RC seaplane championships at Pinehollow! It is hosted by the Portland Skyknights in June.
10:17 Spray IPA or just WD40 onto the workpiece while milling. This makes a huge difference in cutting and surface quality. Also, maybe check the alloy you are using. EN-AW-6082, 7075 or 6026 cuts really well.
Agreed, IPA probably does a great job cooling(and the low viscosity improves tolerances), but an emulsion of oil and water is cheaper and won't catch on fire
You might not have been entirely happy with the plane, but, the onlookers looked both impressed and mesmerized by what they saw... Great seeing the drone footage too!
I had one of the original Hobbyking Skippers, that after a few rounds of conformal coating and foam-tac, had a waterproof FPV setup. Now I fly an updated version of the same plane, the Josway Dragonfly, with a from-the-factory waterproof FPV camera. Gotta shake up the norms a bit, once in a while!
So many techniques went into the building of this plane. I wonder how many hours the build took and how that compares to the previous foam board ground effect plane? It's a pity it didn't work out quite as expected in terms of ground effect but it's a very beautiful design and finish. I enjoy all your builds but something about the breath of skills used to create this one was really impressive. Great job.
Awesome content as always. You've got a new fabrication method to use, and some experience doing it. Can't wait for the next project to get this treatment.
Peel ply makes for great hinge material if you're careful with it. We use it in the construction of RC sailplanes. When grams count (over a 4m span) it is lighter than kevlar
It really depends more on surface area, the trapped air pressure needs to have space to act on the wing surface. It doesn't care for the airfoil shape, it doesn't care about your speed, it just needs space to act. And his new plane is simply too small to really trap ample air under the wing to have a surface area to act on. adding some bigger wing outboards will allow the air trapped under the plane to properly create a lifting moment akin to a hovercraft. I'm not surprised it performs poorly, when he basically built a seaplane lifting body. To try to build a Grouns effect akin to the Russians, they used Jet engines to literally blow air under the wing to generate bonus lift until the aircraft got up to extreme speed where the stubby wings could trap enough air against the water to switch to a pure ground effect behaviour. This design is too heavy for the former and the high mounted engines are basically driving air over the wing instead of trapping it under
Kudos to you for wading into the water and retrieving the broken-off part.
I was about to say the same. Good to see people taking responsibility, and showing a good example.
I was almost disappointed until that footage rolled in.
19:11 This is an artistic footage with all those people in the back... cool!
That was super cool
Asstounding footage
That Indian guy had the best head tracking. 😂
that guy mooning the cam is just perfect
@@user-dk1yb8cc8j I think he just noticed the plane, not the camera. Strangely it was the girls who noticed the plane the most. Usually it's guys who pay more attention to stuff like that.
CNC vacuum is the real MVP
Been watching SuperFastMatt? haha
@@ryushi5 Yeah
The cyclone separator has its own video. Its cool to see all the iterations.
@@Ole_CornPop yeah, and superfastMatt's recent video about the form for the land speeder body work really shows how good it is 😂
@dirty_haute holy shiznit, you weren't lying. I've seen that much material with aluminum cnc but that's not as easy to vacuum on the go. Lol
babe wake up a new rctestflight video just dropped
Babe where u at? Babbbe? ... Oh wait 😢
always a good day when i have an rctestflight notification
@@WannaBeQuant_SUB you're literally a child why are you sad you are single 💀
@@TwistedEngineeringit is a joke.
@@subwasd123 is probably isnt tbh
This was a big departure from your normal builds, quick and dirty prototypes with several modifications until something approximating the concept is created... you went straight into the final form this time. Man the 03 air unit is impressive as heck.
He has an interesting process. I know hindsight is 20/20, but I'm surprised he didn't anticipate the takeoff issues with the pontoon design given his prior experience.
The drone shots at the end were insane
That dude went so close to the water it was crazy
They were beautiful. I've never seen good FPV video from drone to rc plane like that before.
Cutting the Kevlar fabric on the bias (45*) makes the hinges WAY stronger. It results in twice the fibers crossing the hinge line. Yes I did figure this out the hard way haha
Love these videos!
Excellent tip. Is using Kevlar in a hinge a common modeling technique?
That's a great idea. I'm just starting to build some hot wire foam wings, and have been thinking of what hinges to use.
Every time I pass these areas on a sunny day I'm always keeping an eye out for exotic RC craft lol
Im building an airboat out of pink foamboard insulation.. Started 3 months ago, got a "working" prototype but 3 months later i now have a 3d printer, a new larger cnc, been staying up way too late learning onshape and so far down the rabbit hole its ridiculous! Loving\hating every minute of it!! Got a few essential tips and ideas from this video.. Thanks! Its been 11 years since i got my first cnc router, if anyone doesnt understand why so many makers videos have therapists services as sponsors, dont laugh -well you can if you want, but designing something from scratch is a mind f**k in a class of its own.. Especially when you're learning on the fly with no formal education in machining and mechanical engineering.. Dont get me wrong, even the pain we go through is enjoyable and the personal reward factor is off the charts, but the pain is real folks 😊 Thanks again for the content --and pain involved in making it !!!!
Well done for sticking with it and working stuff out!
14:57 made me think how cool would a diving plane be!
I'm picturing some little delta-wing style thing that can just dart into the water like a needle. Really high speed in a straight line but with enough momentum to jump back out.
Would be so sick. However you're probably not gonna see much when diving into the water. And it could loose radio signal
@@DigitalJedi Check out the very old movie "City Beneath The Sea". Opening few minutes features a plane that becomes a sub.
Something like an RC Seabreacher would be fun. Probably have to have a pretty tall mast or towed antenna though to maintain signal during dives.
@@ariafpv "It could lose radio signal" yeah and both props lol
"It doesn't really sail, so let's fly it" 😂 So weird to hear that
That's what they said on the Titanic before aborting a takeoff -- DCA style (Google that reference!) -- and crashing into an iceberg.
thats got to be the best pirate ive ever seen
I'm pretty sure that your issue with water operations is two fold- high tail mounted engines providing a nose down moment under power combined with nacelle steps that are too forward to provide sufficient pivots for rotation. The first could be solved by mounting the motors to the front of the necelles, which will also provide par thrust and blow the whole wing for enhanced low speed lift. The second could be remedied by fiberglassing 3d printed spacers behind the existing steps to move them back to slightly behind the cg. Good luck and thanks for sharing, she's a very pretty bird.
You are right! Just like the ekranoplan. He is also wrong about the ground effect.
Dont underestimate the effect of stiction with the water surface.
Check out an old plans design called Sealoon.
Good work turning your hobby into something not only monetized but also thoroughly entertaining
Awesome but.... O-riiiiiings! For the love of whatever you hold dear, please... You are one of the smartest dudes on the internet and o-ring channel design is super easy, especially when you mill the channel out with Ze Robot. No more "trying" to keep compartments watertight;)
Anyways, back to the video, maybe you did manage to make it watertight after all, hehe.
Any suggestion for o-ring design crash course?
@@AB-bu8ti I am not an engineer, maybe just slightly techy/nerdy and I figured it out pretty much just by using the Eriks online o-ring calculator. But I guess I may also have read some articles way back when or maybe some intro text in Parkers O-ring book (online).
It's fairly simple. O-rings work by being compressed. Dynamic use cases generally have a bit less compression and static ones a tad more, something like 15-30% but the calculators will tell you and there are published guidelines, too. But you don't want to over do it. Also, importantly, the o-ring still needs to have free space to expand into. If you constrain or compress it on all four sides, it will take a permanent deformation and/or wear out fast. Again, the online calculator will throw a warning if you don't have enough free space. Or if you stretch the ring too much. Also, say you have a rod in a bore that needs to be sealed, you wanna keep the gap between the rod and the bore small enough that the o-ring can't get pushed into the gap. Calculator will warn you of that, too;). But that's most likely an issue at higher pressures.
You could actually just do the calcs by hand, too and then add free space, not stretch the o-ring too much and keep the gap small:)
But I suggest making a few example designs in the calculator and soon, you will get the hang of it:)
The sunset shots with Mt. Rainer in the background are spectacular!
"What the heck is that thing?" - all of the random pedestrians at the end of the vid. GREAT STUFF! Sometimes success and failure can't be distinguished from each other.
Your friend getting the shots from his quad did a fantastic job!
Nice. It’s awesome how you show it like it is including your failures.
Great video Daniel! Was nice seeing this RCTestFlight build in the flesh at at Open Sauce 😊
Thanks James! Hope to see you again this year!
@@rctestflight you will! Can’t wait
I like your video and I'm a big fan
Same
man I could watch those drone and FPV shots for hours
I am very far from an aeronautical designer, but I'm wondering if your motors are too high/too far back? that could be putting too much forward rotation at low speeds which could be the reason it is plowing into the water. Your previous designs had the motors right up front and even pointing up a bit. Either way, your videos are excellent, thank you!
I thought that too: thrust-line's too high compared to the previous forward-mounted motors?
I've watched this channel since the early days, the progress and change in technology and sophistication of your builds is impressive, nice work!
Watching your videos is always an inspiring experience. I always feel the need to get up and build something after watching one. Thanks for sharing!
Looks really nice! I love your designs and building methods.
The footage with the drone and the slowmo at the end was amazing! Your building skills have advanced so much, man. Can’t wait what you come up with next :3
Seattle is such a beautiful city thank you for being another person to put us on the map ; )
I have been watching you since you started your RUclips channel. It has been fun watching your engineering skills improve over the years. Your flying skills have always been extraordinary.
Keep it going.
the last shots from the drone and the slowmo at the end are insane
Loved the 600fps with the onlookers in the background.
You know it's a good day when rctestflight posts!!
Nice first flight, and the clarity on that onboard camera is insane. Some beautiful footage, including the fog. Thank you.
That CF plate has more screws than a Boeing door
😂
Thanks for this! There's for sure a gap on FPV Seaplanes models, glad someone else likes flying from water like I do! Cheers! 🌊+✈
As someone who used to restore vehicles for a living I absolutely love glassing. It wasn't a very common repair I got to do as I typically used period correct repairs, but some owners wanted it to look right for lower cost, so filler and glass worked really well sometimes. My absolute favorite was old school body filling using lead.
Everything was great as always, and those slow motion shots at the end 😍
Of all things, I enjoyed the coordination with the drone pilot the most. Reminded me of flying virtual aerobatics. Formation flight is always beautiful.
the manufacturing process here was fascinating. thanks for sharing all the cool details!
I think the orange for flying near people is GREAT. it adds some really cool reaction shots!
I knew when rctestflight and Think Flight had their bromance there would be a love child. She's so cute!
13:09 Good lord that’s so pretty, I have never seen mountains with my own eyes because Florida is literally flatter than a pancake, in fact it’s highest point, Britton hill is only 345 feet tall
16:40 your welcome
Sick arial shots
Indeed! (Also, its aerial)
@@Unapersonaconunmicroscopio same thing
"The 1930 Robertson Waterplane ground-effect vehicle powered by an outboard motor". There are pictures and videos, but I don't think I can post a pic in the comments. I saw this the other day and immediately thought this might be something you'd build or at least be interested in knowing existed, if you don't already. In other news... it's getting to be grass cutting season. I hope you are working on your next autonomous mower contraption. I'm a long time subscriber to the channel and grateful for your willingness to share your talents with the world. Keep up the great work! - Stanford
Great video from Lake Union and Montlake. So cool to see local creators show up on the feed!
The FPV is stunning. Some more air to air flybys would have been great if the drone could keep up!
best rc vehicle test channel EVER
You and Nick Rehm inspired me to learn onshape and now I can make tons of stuff in there and have some really cool projects. It way expanded my follow through with my creativity.
I am living vicariously through your cool hobbies.
This was a nice surprise. I like you making something that you're willing to spend some time on to do it right.
Morning eggs and bacon on toast with some rctestflight videos to go with it is my favorite kind of morning
Daniel, I love your channel and your projects. You are the opposite of lazy. As I watched you apply all that fiberglass I was thinking, I guess you plan on keeping this plane for years to come. On a technical note, over the years I worked on some boat projects while at Columbia University, and a naval engineer turned me on to a three-volume set of books called Principles of Naval Architecture. Columbia's library got them for us, and I was able to look at them. If you can get a hold of them, they are seriously a dense read, but there is an entire chapter dedicated to designing stepped floats for seaplanes. It turns out the design for coming up on plane is trickier than people think. The step has to be the right size and in the right place for it to work effectively. The entire shape of the float is also important. Sorry for the long response but keep up the great work!
rctestflight vids make my day better
Wow. Beyond my comprehension. And from my old stomping grounds too!. You are an amazing engineer, covering all scopes of the physical/digital theater. Love your videos. If you are ever inclined to visit Montana, give me a tickle.
Oh this is going to be amazeballs, you are a modelling master Dan
I live for the "wowee" in your videos
Getting close to the boats in the FPV segment was awesome!
As always, be careful, but it was a really cool shot c:
Your flight makes Seattle look so cool.
Gasworks Park was my favorite place as a kid.
When you mill aluminum, just use some water, coolant, or WD40 to make the milling go smooth. Awesome project, as always!
I can't wait to see you do some variable geometry stuff, love to see an rctestflight rig that can go from 'dead slow' to 'holy crap!'
I'm so glad to see you still making great content. Thanks brother.
A suggestion to save weight on the next round: build pontoons hollow.
So fun! Impressive build.
Ground effect is a function of wing span. Longer wings equal more ground effect. Something like half of the span of the wings in distanced to the surface is when the ground effect becomes noticeable.
Looks like Gavin had some part in that. Like always Daniel you killed it bro. I love rctestflite.
Amazing scenery! love those mountains in the background :) Very interesting video to, looking forward for you doing like the max range test again with one of your planes :)
so good. the build. the trials. the drone footage. love it.
Flew way better than i would have guessed but surface effects on water way less. 😊
Hey I said hi on my bike ride yesterday, sorry if I bothered you. I’ve always loved projects like yours, so it was super cool to see
Not bothersome at all! Come say hi again next time haha. BTW, you said you're a rowing coach, right? Might be fun to take the most efficient propeller from my prop competition and build it into a little electric outboard. Then mount that on one of those super efficient row boats you guys have. Would be interesting to measure the wh/km
ground effect is absolutely more proportional to size (specifically of the wing) and more weight simply means the cushion of air it builds has to "work harder" so to speak to provide enough pressure to make the ground effect as pronounced as an identical plane with less weight.
Those FPV shots were so cool!
Loved seeing the air to air behind the scenes footage!
dude youre living the dream.
I would love to see a video series of you designing a plane like this in on shape (if you already have that I apologize). As someone who wants to get into making custom RC planes I think it would be really interesting to see your though process when it comes to a design.
Lovely video. Top-notch engineering.
An interesting look at what R&D aeronautics engineering probably looked like nearly a century ago; but with only one guy doing all of it. A nice blend of science & art.
The avionics are pretty 21st century
Great build! I've been using heat sinks sticking out of the fuse on my ESCs for electric float planes for 20 years now! Love what you did on the VTX, you might want to add that feature for the ESCs too! Consider joining us for the NW RC seaplane championships at Pinehollow! It is hosted by the Portland Skyknights in June.
That footage on the foggy lake…..just wow. Stunning setting.
I’m always surprised how massive these builds are.
10:17
Spray IPA or just WD40 onto the workpiece while milling. This makes a huge difference in cutting and surface quality. Also, maybe check the alloy you are using. EN-AW-6082, 7075 or 6026 cuts really well.
Agreed, IPA probably does a great job cooling(and the low viscosity improves tolerances), but an emulsion of oil and water is cheaper and won't catch on fire
Those shots on the lake at 16 minutes are incredible
You might not have been entirely happy with the plane, but, the onlookers looked both impressed and mesmerized by what they saw... Great seeing the drone footage too!
Brilliant as usual... I bet people from around the world would pay good modelling money to come and be paying help with you.... :D
Now this is sick
I had one of the original Hobbyking Skippers, that after a few rounds of conformal coating and foam-tac, had a waterproof FPV setup. Now I fly an updated version of the same plane, the Josway Dragonfly, with a from-the-factory waterproof FPV camera. Gotta shake up the norms a bit, once in a while!
Wow, those drone shots are stunning!
So many techniques went into the building of this plane. I wonder how many hours the build took and how that compares to the previous foam board ground effect plane?
It's a pity it didn't work out quite as expected in terms of ground effect but it's a very beautiful design and finish.
I enjoy all your builds but something about the breath of skills used to create this one was really impressive. Great job.
Even though your not impressed with this, i love it it's awesome!
doesnt matter if its a bad GEV, it looks extremely good!
Man awesome build! You and think flight are making some crazy stuff these days.
Wait, you're here in wonderful Washington state? Cool!
It was really cool watching the fiberglass layup! Maybe if the motors were forward, they would blow air under the plane and create some ground effect.
Far and away my favourite youtuber. Thanks for the videos
I love your videos, bro! Glad you uploaded. I always enjoy having another new crazy project to build whenever you post a new video.
Really good build... but GREAT cinematography. Love your work.
Whyyyy do people still keep taking sponsorship deals with these scammers
Which scammers?
@@jimmcdougall9973betterhelp, their therapists are just random people and their service is expensive
What do you mean “scammers”
tf r u talking about??
He gotta eat too
I've been a subscriber since you were a kid. You make some cool stuff but I miss the early FPV days when you were just seeing what worked.
FYI you can also get kevlar interwoven with carbon fiber and save a step. Beautiful design and work regardless
Awesome content as always. You've got a new fabrication method to use, and some experience doing it. Can't wait for the next project to get this treatment.
Peel ply makes for great hinge material if you're careful with it. We use it in the construction of RC sailplanes. When grams count (over a 4m span) it is lighter than kevlar
Epic build! Take note that not all glues and adhesives "dry", some of them like silicone also "cure" like epoxy.
were mostly just glorified tool collectors so its refreshing to see a true craftsman at work. love your content been watching for years i think 🤔
Ground effect scales with wingspan. If you want to maximize it, make your wings wider.
It really depends more on surface area, the trapped air pressure needs to have space to act on the wing surface. It doesn't care for the airfoil shape, it doesn't care about your speed, it just needs space to act. And his new plane is simply too small to really trap ample air under the wing to have a surface area to act on. adding some bigger wing outboards will allow the air trapped under the plane to properly create a lifting moment akin to a hovercraft. I'm not surprised it performs poorly, when he basically built a seaplane lifting body. To try to build a Grouns effect akin to the Russians, they used Jet engines to literally blow air under the wing to generate bonus lift until the aircraft got up to extreme speed where the stubby wings could trap enough air against the water to switch to a pure ground effect behaviour.
This design is too heavy for the former and the high mounted engines are basically driving air over the wing instead of trapping it under
that final shot was beautiful